mjs513
Senior Member

Thanks for checking @tonton81 :)

Folks - To avoid flooding the forum with new links on Neural networks and available software libraries I decided to create and share a MS Notebook with the stuff I have found interesting. Here is the link:...

You might find this interesting - https://mcuoneclipse.com/2016/08/14/arm-cortex-m-interrupts-and-freertos-part-1/

One of the first sites I was using as a guide for my rover obstacle avoidance functions was the PiRobot implementations. One of the things on that site I wanted to implement using the Teensy was their Learning Obstacle...

Me again Brian. Been digging into c++ threads again for another project and I don't think c++11 or c++14 implements a setPriority command, so I doubt that TeensyThreads does it either. I think it is supported in...

You all made to back to my notes on neural networks - so if anyone is interested here are a couple of links that I was looking at a long time ago: 1. A Neural Network for Arduino 2. Fast Artificial Neural Network...

You could always check out the FreeRTOS site it self to see if there are any questions on 1khz. Also, you could post a issue on Bill's GitHub page. He's usually pretty could at responding. I had to do that with...

Thanks Tim. Didn't realize that. Well - at least now I can tell you it does CMSIS-NN does work on a T3.6 - haven't tried it on a T3.5 though. :)

Hi Brian. Did you check out the other links I posted on RTOS's. Bill G. Also a port for ChibiOS which he thinks works better: https://github.com/greiman/ChibiOS-Arduino. Even though it Arduino he has a directory...

Afternoon @defragster. Just my thoughts: Think this would be a good idea, I saw several posts on at least updating the DSP library to the latest - think its at v5.3 now. Not sure what it would take to do that though....

Back again. Did some more reading on CMSIS-NN, what it is and how to build models and am providing some links if you want to learn more; Deploying Convolutional Neural Network on Cortex-M with CMSIS-NN - this is a...

Hi all. Now that I am using the correct transceiver, I tested it today and its working fine. Here is picture of what the board is suppose to look like when it is loaded. Right now it has the T3.2 with a propshield...

At this point can't really identify the steps because I am not sure when it happened. I can tell you what I was doing over the last couple of days with tonton81 and a new library he is working on. I had three...

Been using 1.44B2 with IDE1.87 and ran into an issue with Windows 10 64-Bit laptop. After using it intensely for the last 2 days updating 3 Teensies constantly (don't ask :) ) I just noticed this morning that there are...

Here is summary of the key posts and steps needed to updated CMSIS-DSP (arm-math.h) to v5: Step 1. Taken from Teensy Convolution SDR (Software Defined Radio) ...

Thanks AutoMike - yep I rewired the 3.3v to the 5v pin. Forgot to mention that but finally figured out my problem. For the MCP2551 I actually used a MCP2515 and was using the wrong chip in for the ti sn65. I had the...

I changed to the MCP2551 and circuit still didn't work. Something is wrong somewhere and just don't where

Hi AutoMike, Welcome to the forum. As for your questions: For testing I am only using two boards. One is the waveshare and the other is my version. Believe it or not I have had 3 running at one time all with...

Just installed IDE 1.8.7 and 1.44 Beta 2. Install went without a hitch on a Windows 10 64bit laptop. Did a couple of compiles and no issues popped up. Changing boards back a forth between a T3.2 and T3.5 seems to...

Just as a heads up just saw that Arduino 1.8.7.

Going back over the recent posts was wondering if a future version of T4 would have CAN FD and that extra pin breakout for the video lines that was mentioned in an earlier post. Know it kind of early when the first T4...

I made one more change to the Filter setup. I added back in the Brian's calibration for sensor and made the necessary modifications to the filter. While still noisy seems to work a lot better than with the previous...

Hi Guys, Took a break from UAVcan and went back to working on trying to find a way to get a Kalman Filter working on my MPU9250. I found another implementation...

Hi Brian Just took a look at the RFM69HCW. Both Adafruit and Sparkfun have a tutorial on using the module. Looks interesting. And I believe you are right the 3dr's use the SiL chip. Mike

Hi Brian Nice job on the backpacks. A couple of questions if I may. would the backpacks be compatible with the 3.5 and t3.6? also, for the 900mhz radio would that be equivalent to a 3dr radio clone. I use those all...

I know this thread is about ROS on the Teensy 4. But I thought that I would go ahead and document a few things that I found associated with the T3.6: ChibiOS on Teensy 3.6 - This is based on...

Hi Brian. You might find this thread interesting. https://forum.pjrc.com/threads/46733-Support-for-FreeRTOS?highlight=RTOS for your work. Bill G. has a ported copy - looked it up once but forgot the details. Think...

I've added another example to the GITHUB repository showing how you can connect an IMU node along with a GNSS node to the third Teensy that subscribes to both nodes. In this case I did it to illustrate the use of...

The Teensy 3.2 is the main controller and sends serial commands I entered to the node over the CAN bus. The Teensy 3.6 is the Gimbal node and powered from the battery for the Gimbal/controller. Notice no USB cable. ...

Nice job on the sniffer Tony. Thanks again for all the help with IFCT and UAVcan.

Tim. I am pretty sure it does. While doing some debugging I was watching task manage disk and processor usage shoot up to close to 100%. Also saw that it is only recompiling those modules that changed - messages came...

Just wanted to let you all know that I incorporated IFCT into the UAVcan library for Teensy 3.x, see this post: https://forum.pjrc.com/threads/53394-UAVcan-for-Teensy-3-x-Proof-of-Concept?p=186568&viewfull=1#post186568...

Before getting back to work I incorporated tonton81's new IFCT FlexCAN library into UAVcan. Thanks to tonton81 for all his help in getting this merged and updating his library. I also updated the examples to ensure no...

If I may. I've been using 1.43beta3 for every from UAVcan, USB Host Shield 2.0, to SBGC gimbal control with absolutely no issues. I would recommend to close the beta 3 out and make it 1.43 this way its associated with...

I think, as Paul said for the first release its going to be the 1052. Maybe later versions will go to the 1060. Similar to the T3.x progression. Just a guess.

@skpang I asked that same question a while ago you might want to check this post: https://forum.pjrc.com/threads/52761-Teensy-4-0-(hypothetical)-pin-assignments?p=182508&viewfull=1#post182508 and the one preceding it.

In prep for a little more challenging project with UAVcan and Teensies I picked up a inexpensive simpleBGC (clone) 2 axis gimbal. Unfortunately had to flash it with a different software version of simpleBGC and had to...

Another strange undefined error I am getting that I think is namespace related. I am in the process of updating the clock methodology that is used in the current UAVcan library for the Teensy. It is basically going...

I did a simple test with SerialPlotter and it does work as long as u have some sort of delay in the delay in the loop (I used a delay(1) for test. If you don't have a delay it works and eventually hangs the sketch to...

Was sitting having coffee and thought came across my mind - about pinouts vs propshield - thinking ahead for a very future project :). I just looked around and maybe a DAC could be added but that would require a lot of...

I know this may be a little pre-mature since T4.0 isn't off the drawing board but wanted to throw this out there. Will be any plans for redesigning the prop-shield for the T4.0 down the road?

Thank you. Looking forward to giving it a try. Really appreciate it. Respectfully Mike

Tim. Yep you asked :). The response was in the second link. Basically it works with just comx (teensy) but not the comx (Teensy 3.5). So the issue is in Teensyduino like you said in the post following that one. So...

Not an expert here but ran into similar challenge had found the answer here: https://www.pjrc.com/teensy/td_uart.html. From there it doesn't look you can with just setRX and setTX unless you use those pins for serial2....

Thanks Paul but on a priority scale I would be low since it doesn't really have much impact but was an observation. If there are other things that need to be fixed I think this should be low on the list. ...

Fixes for 1.43. The serial plotter issue first mentioned here: https://forum.pjrc.com/threads/52649-Teensyduino-1-42-Beta-8?p=184177&viewfull=1#post184177. And some debug info here:...

Hi Paul Just installed 1.8. with Teensyduino 1.43 and had no issues with the install. Went very smoothly. Compiled 3 test sketches: (1) UAVcan sketch that pretty much uses a heck of a lot c++ libraries as well...

Thanks for posting Brian. Bringing back a lot of memories :)

@DaQue. I think castellateded edges was already discussed in a previous post - may want to read the previous ones. Not sure which one.

@PaulStoffregen A question and suggestion on CAN pin locations. Was wondering if it possible to get CAN on pins on 3&4 to align more with the T3.2. Looking at the pin assignments in post #20 I don't think so but...

Ok. Added a new GitHub repository for a Teensy CANbus monitor that can be used with UAVcan applications and the UAVcan GUI tool (https://github.com/UAVCAN/gui_tool). The repository is at:...

Interesting thing is that I added and deleted addition prints in loop and didn't change the size noticeably. Once you call it, not much additional is added for addition stream cases. Have to do a test.

Not sure if that's good or bad. Wonder why the bloat when its in the loop? Something not clearing?

No I didn't see that one. Will have to see if I can find it. Anyway here is the standalone version with OStream. Have fun...

I am going to try and make it stand alone so I can use it in any sketch and will let you know. Running into a few other problems now :) Probably will make that a separate post.

@defragster. I just did a compile on the T3.6 with the UAVcan code and the difference in using the Ostream function was only about 700bytes. I will have to give it a test as a separate function.

@DaQue. I apologize if you thought you broke the rules. I added that just to make sure folks were aware of the purpose of the pictorials and not taking taken as cast in stone. If you further read the post and post 20...

Morning all. I would just like to reiterate something that defragster stated in his post. The mock-ups I posted are just that, mock-ups of the pin layout shown against a T3.2 since I believe that is the relative...

That will be a nice addition to the board in case any one wants to use UAVcan in the future. I have tested the lib on a 3.6 and seems to work no issue. There is only one problem that is flexcan library related.

Thanks for the added info Brian. The message header looks interesting. Getting similar to UAVcan. You raven sensor board is giving me some ideas. :) The price for that board a little too much just for me to...

Hi Brian Took a look at the messages and your project page. Nice. Just a couple of questions for understanding. When you say nodes you are referring to each sensor input that is connected to a single Raven...

Not an expert here but from the manual for flexIO, it does allow for a lot of customization for the user to develop additional library support. If you use a lot of the FlexIO pins you loose the other functional...

Ok. Last topside update: EDIT: Here's a rough out of the backside, just a thought.

Ok. Think I am done for night now. All I can say is wow when you look at it this way. Cheers Mike EDIT: before you say it I forgot XBAR

Thanks a lot to show. I wasn't sure what some of nomenclature meant on the pins without looking at the manual, so I try to put what was familiar. Figured you were going to rename the ports eventually but just wanted...

Thanks Paul.... Just have some fun. Will do the other side for another post. Hope you don't mind. Update: Heres the other side of the board Just noticed that MOSI3 and CLk3 are on the underside pins? ...

So at least for part of the board this would probably be close - T3.2 form factor. Not sure what some of the pinouts are on the side but I will get there. As for the underside eventually. Sorry if I am jumping the...

Based on what Paul was describing - yep will be the size of an uno - maybe a little bigger :) but not the size of the mega. Can't wait to see the footprint and the final pinout.

Thanks for the fix Tony. Caught one but missed the other :) It works like a charm. Now have to get it working with UAVcan but at least its something to test with. Mike

Just to jump in, I agree with Michael and Kurt. Have hard enough time with the bottom pads at 0.1" and prefer not to go smaller. Most of the reasons I go with the bottom pads is for the breakout board I use and the...

Basically it just streams message traffic - not even returns just a stream. Essentially the Teensy becomes a CAN-USB bridge for things like CANapp or the UAVcan Gui tool.

Thanks Tony. Think its something small but just can't see it going though the code. :(

Hi Tony. Been working on new project using a sketch made for the SeedStudio Can Shield that uses MCP CAN :) It is based on the Linux SLcand which reads any SLcan data from the bus and then dumps it so it can be used...

Done that myself Tim. Cross posts always got me. Didn't make much of a difference in the sketch size with the T3.5/T3.6 and printf does make it easier.

Hi Tim. No it was with a T3.5 and T3.6 but I think you missed the post where I got it working - https://forum.pjrc.com/threads/53423-Printf-revisited?p=185150&viewfull=1#post185150. There was a conflict with another...

Thanks, me too, something simple, so frustrating :)

Just update the library so that Ostream with operate correctly with Teensy, i.e., printf works. See this thread for explanation: https://forum.pjrc.com/threads/53423-Printf-revisited.

Ok. Looking and looking but no clue. Anyone have any idea what could possibly cause printf not to print to serial? UPDATE: Figured it out. After looking at this post...

Brian. When I get it working I will definitely posted the update code here for testing. UPDATE: ok I ran this sketch: #include <uavcan.h> //#include <uavan/uavcan.h> #include <uavcan/helpers/ostream.hpp>...

Don't know if there is any simple overview out there. If your go to https://uavcan.org/ it pretty much details the specification, implementation and provides a bunch of tutorials.

Ok. I just updated the Flexcan library to resolve issues with multi line messages. I also updated the library with a GNSS Fix test message as well as a example of using a custom message for IMU data. The IMU example...